Annunciator.



No. 67u76. Patented Apr.'9, |901. D. ROUSSEAU. ANNuNclATon.

(No Model.) (Application led Jly 21, 1399.)

me nonms mens oo.. num-uma.. wAswNm-on, n. c.

f Witnesses DAVID ROUSSEAU, OF NEW` YORK, N. Y.

ANNUNCIATOR.

SPECIFICATION forming' part of Letters Patent No. 671,776, dated April 9, 1901.

` Application tiled July 21, 1899. Serial No. 724,592. (No model.)

To LZ whom i?? 71mg/ afl/@067711: vided with a supporting-iugerl for holding Be it known that I, DAVID ROUSSEAU, a theannunciator-drop inanormal elevated po` citizen of the United States, residing in the sition. The annunciator-drop is provided 55 borough of Bronx, city, county,`and State with the two side frames 17, which carry the of New York, have invented a certain new two faces 18 and 19, one indicating the nor, and useful Improvementin Annunciators, of mal or elevated position of the annunciatorwhich the following is a specification. drop and the other the depressed position.

My invention relates to various new and The side pieces 17 of the annunciator-drop 6o useful improvements in annunciators; and are preferably pivoted on non-magnetic pins 1o the object of the invention is to simplify and 20, formed in the reduced portions 14 of the cheapen the construction of these devices, to core 2. Each side piece 17 of the annunciamake their operation more certain, and to tor-drop is provided withashoulder21,which materially reduce the size of the operatingengages the corresponding iinger 16 of the ad- 65 magnet. jacent 'armature 10 or l1 when said armature I In order that the invention may be better is forced outward into its normal position by understood, attention is directed to the acits weight or by the spring l5. When the companying drawings, forming a part of this coil l is energized, the armatures and 11 specification, whereinwill be attracted toward the core, withdraw- 7o Figure 1 is a side View of the device, showing the fingers 16 from the shoulders 21 and 2o ing in full lines the annunciator-drop in its allowing the annunciator-drop to fall by its normal position. and in dotted lines its posiweight. By employing two armatures, as tion when released; Fig. 2, alongitudinal secexplained, it will be observed that should tion on the line 2 2 of Fig. 1; Fig. 3, a section one of them be operated before the other, 75 on the line 3 3 of Fig. 2, and Fig. 4 a section owing to any increase in friction in the laton the line 4 4 of Fig. 1. ter, the armature first moved will come into In all of the above views corresponding contact with its core to close the magnetic parts are represented by the same numerals circuit of the coil 1 and materially increase its of reference. magnetic strength, whereby the other arma- 8o The single coil 1 is provided with a core 2 ture will be immediately attracted to release o and is carried in a frame 3, made of non-magthe annunciator-drop. I have found in pracnetic material, such as brass. This frame is tice that by this arrangement of armatures provided with a front bar 4 to give it rigidity. considerably-less battery-power is required. The frame 3 is secured to a base 5, made of Preferably each armature is provided with a 85 iron or steel, by means ot' the overturned finresetting-finger 22, with which a cam-finger gers 6. The base 5 is provided with a bracket 23 on the corresponding side 17 of the ann un- 7 ,having screw-holes therein by which the deciator-drop engages when the parts are reset. vice may be set up. The base 5 isprovided When the annunciator-drop is moved upwith two pairs of ears 8 8 and 9.9, in which ward, the cam 23 will engage the correspond- 9o are mounted the two armatures 10 and 11 on ing resetting-finger to move the correspondf 4o longitudinal pins l2. The armatures are proing armature bodily away from its core,thro w vided with openings 13 therein, which receive ing the finger 16 into the path of the shoulder the ends of the core2 of the magnet 1. Each 21 and providing for the positive locking of end of the core 2 is reduced, as shown at 14, the annunciator-drop in its normal position. 95 whereby a face will be produced immediately By thus positively restoring the armatures to surrounding each'reduced portion, so that their normal positions I overcome the possi- When the coil 1 is excited the armatures 10 bility of failure due to the tendency of the and 11 will be drawn inward by the magnetic armatures to be held in their attracted posiattraction. The armatures 10 and 11 are pretion by any residual magnetism in the core roo vented from sticking to the faces of the core or by friction or otherwise. 5o 2, due to residual magnetism, by springs 15, It will be observed that the entire device is which also serve to force the armatures away extremely compact in its make up, and since from the pole-faces. Each armature is proall the moving parts can be stamped out of Patent, is as follows:

1. In an annunciator, the combination of a coil, a core for said coil, an annunciator-drop, an armature for each end of the core, a nger on each armature for engaging the annunciator-drop to hold the latter in its elevated position, and restoring-cams on the annunciatordrop for positively restoring the armatures during the resetting operation, substantially as s et forth.

2. In anannunciator, the combination ofa non-magnetic frame, a coil carried in saidframe, a core for said coil, a magnetic base, a pair of armatures pivoted on said base and cooperating with the ends of the core, and an annunciator-drop maintained in a normal,

elevated position by said armatures, substantially as set forth.

3. In an annunciator, the combination of a non-magnetic frame, a coil carried in said frame, a core for said coil, a magnetic base, a

pair of armatures pivoted on said base and cooperating with the ends of the, core, an annunciator-drop maintained in a normal, retracted position by said armatures, and restoring-cams on the annunciator-drop for positively restoring the armatures during the resetting operation, substantially as set forth.

4. In an annunciator, the combination of a coil, a core for said coil, non-magnetic spindles carried by the ends of said core, an annunciator-drop pivoted on said spindles, and an armature at each end of said core having a nger for locking the annunciator-drop in its normal position, substantially as set forth.

5. In an annunciator, the combination of a coil, a core for said coil, non-magnetic spindles carried by the ends of said core, an annunciator-drop pivoted on said spindles, an armature at each end of said core having a finger for locking the annunci-ator-drop in its normal position, and restoring-cams carried by the annu nciator-drop for positively restoring the armatures during the resetting operation, substantially as set forth.

This specification signed and witnessed this 14th day of July, 1899'.

D AVID ROUSSEAU.

Witnesses:

JNO. R. TAYLOR, ARCHIBALD G. REESE. 

